The amusement park ride consists of a 200-kg car and passenger that are traveling at 3 m> s along a circular path having a radius of 8 m. if at t = 0, the cable oa is pulled in toward o at 0.5 m> s, determine the speed of the car when t = 4 s. also, determine the work done to pull in the cable.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.